TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB00BSLNG492 Issuer Name CORNISH METALS PLC UK or Non-UK Issuer UK 2. Reason for Notification An acquisition or disposal of voting rights 3. Details of person subject to the notification obligation Name Killik & Co LLP City of registered office (if applicable) Mayfair Country of registered office (if applicable) United Kingdom Name City of registered office Country of registered office Mr Nigel Reed 4. Details of the shareholder Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above City of registered office (if applicable) Country of registered office (if applicable) 5. Date on which the threshold was crossed or reached 26-May-2026 6. Date on which Issuer notified 27-May-2026 7. Total positions of person(s) subject to the notification obligation . % of voting rights attached to shares (total of 8.A) % of voting rights through financial instruments (total of 8.B 1 + 8.B 2) Total of both in % (8.A + 8.B) Total number of voting rights held in issuer Resulting situation on the date on which threshold was crossed or reached 2.999731 0.000000 2.999731 3763802 Position of previous notification (if applicable) 3.952283 0.000000 3.952283 8. Notified details of the resulting situation on the date on which the threshold was crossed or reached 8A. Voting rights attached to shares Class/Type of shares ISIN code(if possible) Number of direct voting rights (DTR5.1) Number of indirect voting rights (DTR5.2.1) % of direct voting rights (DTR5.1) % of indirect voting rights (DTR5.2.1) GB00BSLNG492 3763802 2.999731 Sub Total 8.A 3763802 2.999731% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Type of financial instrument Expiration date Exercise/conversion period Number of voting rights that may be acquired if the instrument is exercised/converted % of voting rights Sub Total 8.B1 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of financial instrument Expiration date Exercise/conversion period Physical or cash settlement Number of voting rights % of voting rights Sub Total 8.B2 9. Information in relation to the person subject to the notification obligation 1. Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer. Ultimate controlling person Name of controlled undertaking % of voting rights if it equals or is higher than the notifiable threshold % of voting rights through financial instruments if it equals or is higher than the notifiable threshold Total of both if it equals or is higher than the notifiable threshold 10. In case of proxy voting Name of the proxy holder The number and % of voting rights held The date until which the voting rights will be held 11. Additional Information We are submitting the disclosure in behalf of Mr Nigel Reed. 12. Date of Completion 13. Place Of Completion Killik & Co